• May include: A teal 3D-printed rectangular storage case with a hinged lid. The interior base features four circular compartments and one central cylindrical slot containing a small metal component with a circular opening.
  • May include: A square orange storage case with a hinged lid featuring a sunburst pattern. The interior contains a light purple insert with a grid of one hundred circular holes for organizing small items. The case has two front latches.
  • May include: A dark green rectangular storage case with a hinged lid and a red latch. The interior features a red insert with multiple circular slots for small items, and one small clear glass vial is placed in one of the slots.
  • May include: A rectangular, hinged black plastic case featuring a holographic star pattern on both halves. The surface displays a gradient of iridescent, multi-colored star shapes against a dark background, with a red tab at the top.
  • May include: A rectangular purple storage case with a hinged lid and a secure latch mechanism. The interior features a bright teal insert with a grid of numerous small, circular, vertical compartments designed for organized storage.
  • May include: A teal 3D-printed storage case with a hinged lid and a black metal latch mechanism. The interior features five circular slots designed for vials, with one clear glass vial containing a red cap inserted into the second slot.
  • May include: A teal-colored, hinged, rectangular plastic object featuring two identical sections connected by a central pivot. Each section has a textured, iridescent surface with a star-patterned holographic finish that reflects light.
  • May include: A square, peach-colored plastic case with a hinged design. The front panels feature a radiating sunburst pattern with alternating sections of solid color and holographic star-shaped glitter accents. Two small hinges are visible at the top.
  • May include: A square, peach-colored storage case with a hinged lid. The interior of the lid features a sunburst pattern. The base contains a light purple insert with a grid of one hundred circular holes for organizing small items.
  • May include: A rectangular green storage case with a hinged lid and a red latch. The interior features a red insert with forty-eight circular holes for small items, and one small silver cylindrical object is placed in one of the holes.
  • May include: A teal 3D-printed rectangular storage case with a hinged lid. The interior base features four circular compartments and one central cylindrical slot containing a small metal component with a circular opening.
  • May include: A square orange storage case with a hinged lid featuring a sunburst pattern. The interior contains a light purple insert with a grid of one hundred circular holes for organizing small items. The case has two front latches.
  • May include: A dark green rectangular storage case with a hinged lid and a red latch. The interior features a red insert with multiple circular slots for small items, and one small clear glass vial is placed in one of the slots.
  • May include: A rectangular, hinged black plastic case featuring a holographic star pattern on both halves. The surface displays a gradient of iridescent, multi-colored star shapes against a dark background, with a red tab at the top.
  • May include: A rectangular purple storage case with a hinged lid and a secure latch mechanism. The interior features a bright teal insert with a grid of numerous small, circular, vertical compartments designed for organized storage.
  • May include: A teal 3D-printed storage case with a hinged lid and a black metal latch mechanism. The interior features five circular slots designed for vials, with one clear glass vial containing a red cap inserted into the second slot.
  • May include: A teal-colored, hinged, rectangular plastic object featuring two identical sections connected by a central pivot. Each section has a textured, iridescent surface with a star-patterned holographic finish that reflects light.
  • May include: A square, peach-colored plastic case with a hinged design. The front panels feature a radiating sunburst pattern with alternating sections of solid color and holographic star-shaped glitter accents. Two small hinges are visible at the top.
  • May include: A square, peach-colored storage case with a hinged lid. The interior of the lid features a sunburst pattern. The base contains a light purple insert with a grid of one hundred circular holes for organizing small items.
  • May include: A rectangular green storage case with a hinged lid and a red latch. The interior features a red insert with forty-eight circular holes for small items, and one small silver cylindrical object is placed in one of the holes.
Report this item to Etsy

3D Printed Cartridge Travel Case | Insulin Pen Cartridge Storage

EntropyRanchMfg  
5 out of 5 stars

Item highlights

  • Made to order

Seller's description

Important: Please measure your cartridges prior to purchasing to ensure proper fit.

Organize your cartridges with Entropy Ranch’s durable, 3D-printed holder. Made from high-quality PLA plastic, it is available in your choice of color. Feel free to message us to request custom colors.

Disclaimer:
Please note that imperfections such as minor surface variations or texture inconsistencies may occur due to the inherent nature of 3D printing technology. These do not affect the functionality or structural integrity of the product. As a result, we do not accept refund for such imperfections.

Return Policy:
We do not allow immediate returns. However, if you do have any problems with our product please do not hesitate to contact us directly. We are always happy to help!

Holds 3ml pen cartridges, so it works as an insulin cartridge or GLP-1 pen case for travel (plain PLA, not insulated).

View more

Item review

Why this review appears

All reviews are from verified buyers. This review is shown automatically based on factors like recency, whether it includes comments, your chosen language, and whether the rating reflects the typical experience with the shop.

“I love my new cartridge case. The seller was awesome. I will definitely be purchasing again.”

Tiffany

Feb 13, 2026

View all

Price:$26.45+

Save 25% when you spend $150+ at this shop.

Please select a color

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You can only make an offer when buying a single item

Shipping & return policies
  • Get it by
    Nov 2-6
  • Cost to ship
    $5.99 to United States, 43215.

    Enjoy free shipping to the US when you spend $35+ at this shop.

Reviews for this item

5.0

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(4 reviews)

5.0 Item quality
5.0 Shipping
5.0 Customer service
100% Buyers recommend
5 out of 5 stars 5 This item

Tiffany Feb 13, 2026

I love my new cartridge case. The seller was awesome. I will definitely be purchasing again.

Tiffany Feb 13, 2026

Response from Entropy Ranch

💙💙💙

5 out of 5 stars 5 This item

Matt Sep 2, 2025

The Ranch always goes above and beyond. The best customer service and amazing products

Matt Sep 2, 2025

Response from Entropy Ranch

😍😍😍

5 out of 5 stars 5 This item

Jamie Jun 13, 2025

Came as described, better looking than pictures,would buy from this seller again! Great products

Jamie Jun 13, 2025

Response from Entropy Ranch

Thank you, and welcome to the Ranch family!

5 out of 5 stars 5 This item

B Feb 24, 2025

Absolutely great work of art as is the usual with this shop! ❤️

B Feb 24, 2025

Photos from reviews

Seller's description

Specifications

May include: A teal 3D-printed rectangular storage case with a hinged lid. The interior base features four circular compartments and one central cylindrical slot containing a small metal component with a circular opening.

Important: Please measure your cartridges prior to purchasing to ensure proper fit.

Organize your cartridges with Entropy Ranch’s durable, 3D-printed holder. Made from high-quality PLA plastic, it is available in your choice of color. Feel free to message us to request custom colors.

Disclaimer:
Please note that imperfections such as minor surface variations or texture inconsistencies may occur due to the inherent nature of 3D printing technology. These do not affect the functionality or structural integrity of the product. As a result, we do not accept refund for such imperfections.

Return Policy:
We do not allow immediate returns. However, if you do have any problems with our product please do not hesitate to contact us directly. We are always happy to help!

Holds 3ml pen cartridges, so it works as an insulin cartridge or GLP-1 pen case for travel (plain PLA, not insulated).

Delivery details and policies

  • Get it by
    Nov 2-6
  • Returns and exchanges
    Not accepted
  • Ships from
    Georgetown, TX
  • Cost to ship
    $5.99 to United States, 43215

    Enjoy free shipping to the US when you spend $35+ at this shop.

    There was a problem calculating your shipping. Please try again.

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Star Seller

This seller consistently earned 5-star reviews, shipped orders on time, and replied quickly to messages.

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Meet your seller

EntropyRanchMfg
Entropy Ranch
EntropyRanchMfg ·

Texas, United States

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 5.0
·
2.2k sales
·
2 years on Etsy
Entropy Ranch
1 shop member

Usually responds in a few hours

Smooth shipping Has a history of shipping on time with tracking.

Speedy replies Has a history of replying to messages quickly.

Rave reviews Average review rating is 4.8 or higher.

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